Method for realizing high resolution degree three-dimensional imaging by projector producing translation surface fringe

A three-dimensional imaging, high-resolution technology, applied in the field of imaging, can solve the problems of computer identification difficulties, device manufacturing and processing difficulties, and complex solving operation processes, so as to achieve the improvement of three-dimensional space sampling accuracy and imaging efficiency, and to improve identification and differentiation. Ability, wide range of applications

CN1786810AInactive Publication Date: 2006-06-14SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2006-06-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method to realize high analysis 3D imaging from projector generating gliding plane array stripe. By using the scanning method of gliding the plane array stripe, two-value structure light stripe array would be generated, the plane array stripe would step move along the vertical scanning direction according to step distance b and frequency f that could be captured by video camera and image collecting card. Using the method of optical triangular surveying, the 3D data would be gained and accumulated to realize 3D imaging. The invention could be used to make high analysis 3D imaging sensor.
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Description

technical field

[0001] The invention relates to an imaging method in the field of optical technology, in particular to a method for generating translational array fringes by a projector to realize high-resolution three-dimensional imaging. Background technique

[0002] Optical three-dimensional imaging technology is an important part of machine vision research. As the "eye" of automation technology, it has extremely wide applications in many fields. The high-resolution optical three-dimensional imaging system can obtain more three-dimensional data on the surface of the measured object within the effective field of view composed of the projection light path of the projection device and the receiving light path of the camera, so as to achieve the goal of high sampling accuracy in three-dimensional space . At present, the following high-resolution optical three-dimensional imaging methods are used in the field of active machine vision and have their own problems: (1) The metho...

Examples

Embodiment Construction

[0022] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 As shown, it is a schematic diagram of the basic principle of the present invention. The computer controls the projector and the camera. The projector emits a projected image and projects it onto the object to be measured. The area stripes in the projected image move in parallel according to the step frequency f. Deformation occurs when parallel area stripes are projected onto the object under test. The camera captures the image of the deformed area array fringe, and collects it into the computer through the image acquisition card. A common liquid crystal projector or the like may be used as the projector. The camera can be an ordinary CCD camera or a CMOS camera. The effective field of view of the three-dimensional imaging is the intersection area of ​​the field of view of the projector an...